How Whatsapp should look like

Done with my little side project. This is how I think Whatsapp should look like. I absolutely love Whatsapp, it's kinda part of my life actually, but there's one thing that bothers me: the design.

So here's my shot of how I would design one of the most popular apps at the moment.

Attached some real pixels for the full experience & a shot of how it looks on the beautiful iPhone 5.

What do you guys think?

(Thanks to @Geoff Teehan for the awesome iPhone 5 template)